I've had some First Gold that was surprisingly floral (but then, it is related to EKG, isn't it??) I was hoping to get that orange blossom out of Ahtanum, but was disappointed (could've been the Ahtanum batch I had).
Crystal sometimes gives me a super-nice floral note; it's a hop that seems to do a little bit of everything in a subtle way, not in front but as a complementary supporting hop.
I just picked up some Triskel that is supposed to be very floral, but I haven't had a chance to try it yet.